// SNMP 概览图表 — 设备状态分布 + CPU 对比 // Logan.Li
import { useMemo } from 'react';
import {
  BarChart, Bar, XAxis, YAxis, CartesianGrid, Tooltip,
  ResponsiveContainer, Cell, PieChart, Pie,
} from 'recharts';
import { Card, CardContent } from '@/components/ui/card';
import { BarChart3, PieChart as PieChartIcon } from 'lucide-react';
import type { SnmpDevice, SnmpOverviewItem } from './helpers';
import { fmtMetricValue, statusColor } from './helpers';
import { MonitorChartTooltip, MONITOR_PIE_STROKE, MonitorPieTooltip } from '../shared/monitorChartTheme';
import { useTranslation } from 'react-i18next';

interface Props {
  devices: SnmpDevice[];
  overview: SnmpOverviewItem[];
}

export function SnmpOverviewCharts({ devices, overview }: Props) {
  const { t } = useTranslation();
  const statusData = useMemo(() => {
    const online = devices.filter((d) => d.status === 'online').length;
    const error = devices.filter((d) => d.status === 'error').length;
    const offline = devices.length - online - error;
    return [
      { name: t('common.online'), value: online, fill: 'var(--dg-green)' },
      { name: t('common.abnormal'), value: error, fill: 'var(--dg-red)' },
      { name: t('common.offline'), value: offline, fill: 'var(--dg-text-muted)' },
    ].filter((d) => d.value > 0);
  }, [devices]);

  const cpuData = useMemo(() => {
    return overview
      .filter((o) => o.cpu != null && o.cpu > 0)
      .map((o) => ({
        name: o.name.length > 10 ? `${o.name.slice(0, 10)}…` : o.name,
        fullName: o.name,
        cpu: o.cpu ?? 0,
        fill: statusColor(o.status),
      }))
      .sort((a, b) => b.cpu - a.cpu);
  }, [overview]);

  if (devices.length === 0) return null;

  return (
    <div className="grid grid-cols-1 lg:grid-cols-3 gap-3">
      <Card className="lg:col-span-2 bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
        <CardContent className="p-4">
          <div className="flex items-center gap-2 mb-3">
            <BarChart3 className="h-4 w-4 text-[var(--dg-text-muted)]" />
            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">{t('monitor.snmpoverviewcharts.s64f5a4')}</h3>
          </div>
          {cpuData.length === 0 ? (
            <p className="text-xs text-[var(--dg-text-muted)] py-8 text-center">{t('monitor.snmpoverviewcharts.s1f4418')}</p>
          ) : (
            <ResponsiveContainer width="100%" height={Math.max(160, cpuData.length * 36)}>
              <BarChart data={cpuData} layout="vertical" margin={{ top: 0, right: 16, left: 0, bottom: 0 }}>
                <CartesianGrid strokeDasharray="3 3" stroke="var(--dg-border)" horizontal={false} />
                <XAxis
                  type="number"
                  domain={[0, 100]}
                  tick={{ fontSize: 10, fill: 'var(--dg-text-muted)' }}
                  tickLine={false}
                  axisLine={{ stroke: 'var(--dg-border)' }}
                  tickFormatter={(v: number) => `${v}%`}
                />
                <YAxis
                  type="category"
                  dataKey="name"
                  width={72}
                  tick={{ fontSize: 10, fill: 'var(--dg-text-muted)' }}
                  tickLine={false}
                  axisLine={false}
                />
                <Tooltip
                  content={(
                    <MonitorChartTooltip
                      valueFormatter={(v) => fmtMetricValue(v, '%')}
                      nameFormatter={() => 'CPU'}
                    />
                  )}
                  labelFormatter={(_, payload) => {
                    const item = payload?.[0]?.payload as { fullName?: string } | undefined;
                    return item?.fullName ?? '';
                  }}
                />
                <Bar dataKey="cpu" radius={[0, 4, 4, 0]} maxBarSize={20} isAnimationActive={false}>
                  {cpuData.map((entry) => (
                    <Cell key={entry.fullName} fill={entry.fill} />
                  ))}
                </Bar>
              </BarChart>
            </ResponsiveContainer>
          )}
        </CardContent>
      </Card>

      <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
        <CardContent className="p-4">
          <div className="flex items-center gap-2 mb-3">
            <PieChartIcon className="h-4 w-4 text-[var(--dg-text-muted)]" />
            <h3 className="text-sm font-medium text-[var(--dg-text-primary)]">{t('monitor.snmpoverviewcharts.sbb0ae9')}</h3>
          </div>
          <ResponsiveContainer width="100%" height={180}>
            <PieChart>
              <Pie
                data={statusData}
                dataKey="value"
                nameKey="name"
                cx="50%"
                cy="50%"
                innerRadius={42}
                outerRadius={68}
                paddingAngle={2}
                isAnimationActive={false}
              >
                {statusData.map((entry) => (
                  <Cell key={entry.name} fill={entry.fill} stroke={MONITOR_PIE_STROKE} strokeWidth={2} />
                ))}
              </Pie>
              <Tooltip content={<MonitorPieTooltip />} />
            </PieChart>
          </ResponsiveContainer>
          <div className="flex flex-wrap justify-center gap-3 mt-1">
            {statusData.map((d) => (
              <div key={d.name} className="flex items-center gap-1.5 text-xs text-[var(--dg-text-muted)]">
                <span className="w-2 h-2 rounded-full" style={{ backgroundColor: d.fill }} />
                {d.name} {d.value}
              </div>
            ))}
          </div>
        </CardContent>
      </Card>
    </div>
  );
}